Xeon w9-3495X vs i9-11900KF

Primary details

Comparing Core i9-11900KF and Xeon w9-3495X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	426	21
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	18.82
Market segment	Desktop processor	Server
Power efficiency	11.92	15.65
Architecture codename	Rocket Lake (2021)	Sapphire Rapids (2023−2024)
Release date	16 March 2021 (3 years ago)	15 February 2023 (1 year ago)
Launch price (MSRP)	no data	$5,889

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-11900KF and Xeon w9-3495X basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	8 (Octa-Core)	56 (Hexapentaconta-Core)
Threads	16	112
Base clock speed	3.5 GHz	1.9 GHz
Boost clock speed	5.2 GHz	4.8 GHz
Bus rate	8 GT/s	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	256K (per core)	2 MB (per core)
L3 cache	16 MB (shared)	105 MB
Chip lithography	14 nm	Intel 7 nm
Die size	no data	4x 477 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	81 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	+

Compatibility

Information on Core i9-11900KF and Xeon w9-3495X compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FCLGA1200	FCLGA4677
Power consumption (TDP)	125 Watt	350 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900KF and Xeon w9-3495X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	+	+
Deep Learning Boost	+	+

Security technologies

Core i9-11900KF and Xeon w9-3495X technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
Identity Protection	+	-
SGX	-	-
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900KF and Xeon w9-3495X are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900KF and Xeon w9-3495X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800
Maximum memory size	128 GB	4 TB
Max memory channels	2	8
Maximum memory bandwidth	50 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Core i9-11900KF and Xeon w9-3495X.

PCIe version	4.0	5.0
PCI Express lanes	20	112

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	15.74	57.88
Recency	16 March 2021	15 February 2023
Physical cores	8	56
Threads	16	112
Power consumption (TDP)	125 Watt	350 Watt

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Should you still have questions on choice between Core i9-11900KF and Xeon w9-3495X, ask them in Comments section, and we shall answer.

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